Brazilian Journal of Medical and Biological Research v.40 n.7 2007 Brazilian Journal of Medical and Biological Research Associação Brasileira de Divulgação Científica (ABDC) instacron:ABDC Brazilian Journal of Medical and Biological Research, Volume: 40, Issue: 7, Pages: 911-918, Published: 11 JUN 2007 Brazilian Journal of Medical and Biological Research, Vol 40, Iss 7, Pp 911-918 (2007) Scopus-Elsevier